<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <h1>登录</h1>
    <hr/>
    <p th:text="${msg}" style="color:red"></p>
    <form th:action="@{/login}">
        用户名：<input type="text" name="username"/> <br/>
        密 码：<input type="password" name="password"/> <br/>
        <input type="submit" value="提交"/>
    </form>
</body>
</html>